Wedge for use at top of slide of roller blind installation to adjust winding course end of roller blind in factory, has unit elements joined together such that height of wedge is regulated by separation of certain number of elements

摘要

The wedge (C2) has a retractable abutment (7) projected from a vertical slide (5), where the wedge is made of plastic material i.e. polypropylene, and is placed under a unit (6) that is connected to the vertical slide to stop the retractable abutment connected to an apron strip. Multiple unit elements (10) are joined together by sectile zones such that the height of the wedge is regulated by separation of certain number of unit elements. A U-shaped section is provided with a base that is narrower than an inlet of the vertical slide.